Question

Решите пожалуйста примеры

Answer 1

1)sin(180°-30°) = sin30° = 0.5

2)cos(180°-45°) = -cos45° = -✓2/2

3)ctg(360°-60°) = -ctg60° = -✓3/3

4)tg(-13π/6) = tg(-2π - π/6) = -tg π/6 = -✓3/3

5)sin(5π/3) = sin(2π - π/3) = -sin π/3 = -✓3/2

6)sin 7π = sin(6π+π) = sin π = 0

7)tg 1050° = tg(360°•3-30°) = -tg30° = -√3/3

8)cos(43π/4) = cos(11π-π/4) = -cos π/4 = -✓2/2

9)sin(-58π/3) = sin(-19π - π/3) = sin π/3 = ✓3/2